Numerical study of defects in glass reinforced composite transducer shells

被引：0

作者：

Debus, J.-C. ^{[1
]}

Hamonic, B. ^{[1
]}

机构：

[1] IEMN, Lille, France

来源：

Journal De Physique | 1994年 / 4卷 / 5 pt 1期

关键词：

Composite materials - Defects - Fatigue of materials - Finite element method - Fracture - Glass fiber reinforced plastics - Mathematical models - Numerical analysis - Shells (structures) - Structural analysis - Vibrations (mechanical);

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Fatigue in composite shells of flextensional transducers can be investigated experimentally but in service results transposition is uncertain. This study can also be carried out numerically. However, a simple model rarely allows to describe the fracture in fatigue of an existing structure. The approach that is suggested here aims (starting from a modal analysis of a damaged structure in situ and according to results of a numerical computation by finite elements) at identifying the type of flaw in a qualitative and quantitative way. This paper first presents the finite element used to deal with this problem. Second the approach is validated on a shell example. Finally an experiment on a simple G.R.P. plate is used to compare numerical and experimental results to validate the approach.

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页码：347 / 350

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